Help with CNC Shield 3.0 and TeaCup

Help me please, I decided to build mini 3D printer using old DVD drives, Arduino UNO and CNC Shield v3.0.
I need to know how to connect heater and thermistor(hotend) to this board. Some people says on forum that I must to use free analog pins and config them in TeaCup firmware. Can you explain me how to do this?Also i whant to understand how to cinfig extruder drive.I found information that I need to set jumpers in D12-D13 switch. Then axis A will work how independ.So i need to enderstand how to config extruder too.